微流控反应器中苯酚在Ti/SnO2-Sb2O5电极上的阳极氧化分析

doi:10.16085/j.issn.1000-6613.2015.10.040

化工进展 ›› 2015, Vol. 34 ›› Issue (10): 3785-3789.DOI: 10.16085/j.issn.1000-6613.2015.10.040

微流控反应器中苯酚在Ti/SnO₂-Sb₂O₅电极上的阳极氧化分析

王雯婷, 李颖, 荀涛, 蔡旺锋, 张旭斌, 王富民

天津大学化工学院, 天津 300072

收稿日期:2015-04-01 修回日期:2015-04-23 出版日期:2015-10-05 发布日期:2015-10-05
通讯作者: 蔡旺锋,副教授,从事微通道反应器内的反应研究。E-mailwfcai@tju.edu.cn。
作者简介:王雯婷(1990—),女,硕士研究生,从事微流控反应器内苯酚的电化学降解研究。E-mail994350007@qq.com。

Electrochemical degradation of phenol by Ti/SnO₂-Sb₂O₅ in microfluidic reactor

WANG Wenting, LI Ying, XUN Tao, CAI Wangfeng, ZHANG Xubin, WANG Fumin

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2015-04-01 Revised:2015-04-23 Online:2015-10-05 Published:2015-10-05

摘要/Abstract

摘要： 目前在电化学氧化处理法降解苯酚废水的研究过程中,研究者多将重心放在活性电极的探索及制备上,而对于反应器的开发鲜有报道。就这一问题,本文研究了新型微流控反应器中苯酚的电化学降解效果。电化学氧化实验在装有Ti/SnO₂-Sb₂O₅阳极的微型流通池中操作进行,实验对循环体系的体积流率Φ_V、电极间距h的影响进行了考察。结果表明,当流通电解槽中的阴阳极间距采用微米级尺寸时,苯酚的阳极氧化反应取得了较快的氧化速度。在 em= 20 mA/cm²、Φ_V= 0.54 mL/min的电解条件下,电解2~3h苯酚去除率即可达到90%以上,相同流速下电极间距h越小降解速率越快。且由数据回归得到了苯酚的一系列随h的减小而增大的准一级反应的反应速率常数。这一结论表明微流控电解槽内的苯酚降解过程主要传质控制过程。

关键词: 微流控, 反应器, 苯, 电解, Ti/SnO₂-Sb₂O₅

Abstract: At present, most researchers focus on the exploration and preparation of the active electrode in the study of degradation of phenol. The development of new type of reactor has been rarely reported. A microfluidic reactor was used to determine the effects of the structure on the degradation of phenol. The electrochemical oxidation of phenol was performed in a micro flow cell equipped with a Ti/SnO₂-Sb₂O₅ anode, and the effects of volume flow rate, inter-electrode gap were investigated. The results demonstrated that a flow cell with a micro-matric distance between cathode and anode can be used to perform the electrochemical treatment of water contaminated by phenol with high removal. A high removal of phenol up to 90% was achieved under the suitable experimental conditions in 2—3h, and the pseudo-first order rate constant of phenol removal was determined from the model.

Key words: microfluidic, reactor, benzene, electrolysis, Ti/SnO₂-Sb₂O₅

中图分类号:

TQ151.4

王雯婷, 李颖, 荀涛, 蔡旺锋, 张旭斌, 王富民. 微流控反应器中苯酚在Ti/SnO₂-Sb₂O₅电极上的阳极氧化分析[J]. 化工进展, 2015, 34(10): 3785-3789.

WANG Wenting, LI Ying, XUN Tao, CAI Wangfeng, ZHANG Xubin, WANG Fumin. Electrochemical degradation of phenol by Ti/SnO₂-Sb₂O₅ in microfluidic reactor[J]. Chemical Industry and Engineering Progree, 2015, 34(10): 3785-3789.

参考文献

[1] 程子洪,高占先,徐军等. 葡萄糖、淀粉、苯酚电化学氧化耦合制氢行为[J]. 化工进展,2013,32(7):1542-1564.

[2] Ortiz-Gomez A B,Serrano-Rosale,Benito S R,et al. Enhanced mineralization of phenol and other hydroxylated compounds in a photocatalytic process assisted with ferric ions[J]. Chemical Engineering Science,2008,63:520-557.

[3] Khataee A R,Fathinia M,Zarei M,et al. Modeling and optimization of photocatalytic/photoassisted electro-Fenton like degradation of phenol using a neural network coupled with genetic algorithm[J]. Journal of Industrial and Engineering Chemistry,2014,20:1852-1860.

[4] Wang Y Q,Gu B,Xu W L,et al. Electro-catalytic degradation of phenol on several metal-oxide anodes[J]. Journal of Hazardous Materials,2009,162:1159-1164.

[5] Feng Y J,Li X Y. Electro-catalytic oxidation of phenol on several metal-oxide electrodes in aqueous solution[J]. Water Research,2003,37:2399-2407.

[6] Li M,Feng C,Hu W W,et al. Electrochemical degradation of phenol using electrodes of Ti/RuO₂-Pt and Ti/IrO₂-Pt[J]. Journal of Hazardous Materials,2009,162:455-462.

[7] Li X Y. Cui Y H,Feng Y J,et al. Reaction pathways and mechanisms of the electrochemical degradation of phenol on different electrodes[J]. Water Research,2005,39:972-1981.

[8] Cartaxo M A M,Ablad K,Douch J,et al. Phenol electrooxidation on Fe-Co₃O₄ thin film electrodes in alkaline medium[J]. Chemosphere,2012,86:341-347.

[9] Comninellis C H,Pulgarin C. Anodic oxidation of phenol for waste water treatment[J]. Journal of Applied Electrochemistry,1991,21:703-703.

[10] Tahar N B,Savall A. Electrochemical removal of phenol in alkaline solution. Contribution of the anodic polymerization on different electrode materials[J]. Electrochimica Acta,2009,54:4809-4816.

[11] RabaaouiN,Moussaoui Y,Allagui M S,et al. Anodic oxidation of nitrobenzene on BDD electrode:Variable effects and mechanisms of degradation[J]. Separation and Purification Technology,2013,107:318-323.

[12] Scialdone O,Guarisco C,Galia A,et al. Anodic abatement of organic pollutants in water in micro reactors[J]. Journal of Electroanalytical Chemistry,2010,638:293-296.

[13] Scialdone O,Guarisco C,Galia A,et al. Oxidation of organics in water in microfluidic electrochemical reactors:Theoretical model and experiments[J]. Electrochimica Acta,2011,58:463-473.

[14] Scialdone O,Galia A,Sabatino S. Electro-generation of H₂O₂ and abatement of organic pollutant in water by an electro-Fenton process in a microfluidic reactor[J]. Electrochemistry Communications,2013,26:45-47.

[15] He P,Watts P,Marken F,et al. Electrolyte free electro-organic synthesis:The cathodic dimerisation of 4-nitrobenzylbromide in a micro-gap flow cell[J]. Electrochemistry Communications,2005,7:918-924.

[16] Vogt H. Role of single-phase free convection in mass transfer at gas evolving electrodes. Ⅱ. Experimental verification[J]. Electrochimica Acta,1993,38:1427-1427.

[17] Amatore C,Oleinick A,Klymenko O V,et al.. In situ and online monitoring of hydrodynamic flow profiles in microfluidic channels based upon microelectrochemistry:Concept,theory,and validation[J]. ChemPhysChem,2005,6:1581-1589.

[18] Amatore C,Klymenko O V,Svir I. In situ and online monitoring of hydrodynamic flow profiles in microfluidic channels based upon microelectrochemistry:Optimization of electrode locations[J]. ChemPhysChem,2006,7:482-487.

[19] Amatore C,Mota N Da,Cella C,et al. Theory and experiments of transport at channel microband electrodes under laminar flows. 1. Steady-state regimes at a single electrode[J]. Analytical Chemistry,2007,79:8502-8510.

[20] Scialdone O,Corrado E,Galia A,et al. Electrochemical processes in macro and microfluidic cells for the abatement of chloroacetic acid from water[J]. Electrochimica Acta,2014,132:15-24.

[21] Panizza M,Cerisola G. Electrochemical degradation of methyl red using BDD and PbO₂ anodes[J]. Industrial & Engineering Chemistry Research,2008,47:6816-6820.

微流控反应器中苯酚在Ti/SnO₂-Sb₂O₅电极上的阳极氧化分析

Electrochemical degradation of phenol by Ti/SnO₂-Sb₂O₅ in microfluidic reactor

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